MAX98396EWB+T

Audio Special Purpose Overview

The MAX98396EWB+T is a high-efficiency, mono Class-DG speaker amplifier from Analog Devices (Maxim Integrated). It features industry-leading quiescent power consumption and integrates I/V sense capabilities for speaker protection. The device supports digital audio inputs via PCM interface and includes advanced features such as Brownout-Prevention Engine (BPE) and Dynamic Headroom Tracking (DHT). It operates with a dual supply configuration: VBAT (2.5V to 5.5V) for the digital/logic section and PVDD (up to 20V) for the power stage.

Audio Special Purpose Feature Summary

• Class-DG Architecture: Combines D-class efficiency with A/B-class audio quality, featuring low EMI spread-spectrum modulation.
• I/V Sense: Integrated precision output current and voltage monitoring allows host microprocessors to implement speaker protection algorithms without external sensing components.
• Brownout-Prevention Engine (BPE): Automatically attenuates or limits output when supply voltage drops below programmable thresholds to prevent system crashes.
• Dynamic Headroom Tracking (DHT): Optimizes headroom to maintain consistent distortion and listening levels as supply voltage varies.
• Digital Interface: Supports PCM interfaces including I2S, Left-Justified, and TDM formats with sample rates up to 192kHz.

Audio Special Purpose Applications

• Mobile Speakers
• Smart Speakers
• Tablets
• Notebook Computers
• Soundbars
• Portable Audio Devices

Audio Special Purpose Procurement Notes

The suffix 'EWB' indicates the WLP-35 package (2.17mm x 3.0mm). Verify the '+T' suffix corresponds to Tape & Reel packaging (typically 3000 units/reel) per the manufacturer's ordering guide. Ensure PCB layout accounts for the small WLP footprint and thermal requirements.

Audio Special Purpose Selection Notes

Select this component for single-channel applications requiring high power density and integrated speaker protection. The I/V sense feature eliminates the need for external shunt resistors or op-amps for speaker monitoring. Confirm that the host processor can provide the necessary clocking and data lines for the selected PCM interface mode.

Audio Special Purpose Part Context

This part belongs to the MAX9839x family of digital input Class-D amplifiers. It is designed for mobile and portable audio applications where board space, efficiency, and acoustic performance are critical. The WLP-35 package offers one of the smallest footprints in its class.

Audio Special Purpose Replacement Considerations

When replacing, ensure the substitute supports similar I/V sense capabilities if speaker protection is required. Verify pin-to-pin compatibility and register map alignment, particularly for control registers related to BPE and DHT settings. Check package dimensions as WLP packages have specific solder mask and stencil requirements.